US2300681A - Resilient insert - Google Patents

Description

N0v- 3. 1942- M. MARGoLlN RESILIENT INSERT Filed Jan'. 12, 1942 2 Sheets-Sheet i lIN V EN TOR.

M 0( ATTORNEYS Nav. 3; .1942.- M. Mmmm 2,300,681-

RESILIENT INSERT Fled Jan. 12, 1942 2 Sheets-Sheet 2 IN V EN TOR.

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A ATTO Nays 'Patentes Nev. s, i942 UNITED STATES PATENT OFFICE ssamm-missen! Meyei-Margollnlgiinlll. Animation mmm 12, mz, suini No. 420,401 'somma (oise-s) v My invention relates to an inner sole having an improved rubber insert in combination with an outsole and upper. My invention more particularly relates to a rubber or rubber-like insert disposed in an openingformed in the forepart of an insole, the insert being of substantially greater thickness than the insole and extending down below the level of the insole.

This application is in part a continuation of my to improve the breathing properties oi.' a shoe construction.

It is a further object of my invention to provide a resilient ball cushion support for the foot and a. round shoe bottom eifect.

It is a further object of my invention to provide a novel insert disposed in an opening in the forepart of an insole, the insert being securely held in place in an insole. These and further objects of my present invention will become apparent from a consideration of the drawings andthe description thereof which here follows:

Figure 1 isa cross-section of the forepart of a shoe taken across the shoe showing the combination of insole, insert and outsole of my invention.

Figure 2 isa cross-section showing my invention as set forth in Figure 1, the cross section being however a longitudinal cross section of the forepart of the shoe. v

Figure3 isatopplanviewof amodiedform of my invention in which a double lapped rubber insert is employed. v

Figure 4 is a cross-section taken along the line 4-4 of Figure 3.

Figure 5 is a cross section taken across theshoe of a modiiled form of my invention.

Figure 6 is a central cross section of the modliied form of my invention 'shown in .Figure 5.

Figure 'I is a plan view looking down upon the cover sheet of the combination of my invention.

Referring now more specifically to the draw ings, I showin Figure 1 a cross section of the shoe construction in which an insole I is provided with an opening 2 in which is disposed an insert 3 secured to a cover sheet l. The insert 3 and the cover sheet I can either be separate parts adhesively securedtogether or they may be inte from one piece. The insert 3 xtriedis dowtbueiiw the plane of the insole I and 55 at a slight distance from the outsole in the center the insert 3 may be secured in place in the opening in the forepart of the insole I by means of stitching 5 and 5 or by some suitable adhesive. Perforations 3 run through the insert '3. If de- 5 sired, grooves l may run transversely across the bottom ot the insert 3 and these grooves may be connected with the interior of the shoe by perforations I3. An upperII is lasted to the insole I and-an outsole I3 is secured to the insole so that 10 the lower extending portion of the insert 3 presses downwardly against the outsole I3 and gives a rounded shoe bottom eifect in that area Il.

` It will be noted that there is a slight clearance between the insole I and the outsole 2 that l5 is caused both by the extension ofthe upper therebetween and also because of the' fact that the insert 3 extends down below the level of the insole I and therefore separates the insole I from the outsole I3.

2o It is a feature of the present invention that-the l being closed at the upper end thereof. This is because the pressure is exerted through the ad- .ditional thickness on the-bottom of the insert and hence this causes an upward'pressure to be exerted by the outsole I3 upon the insert 3. This action opens the perforations toward the foot,

increasing the breathing and foot comfort. The thickinsert maintains the foot in its correct position with a ball cushion support .therebeneath, because the insert shapes itself to the sole ofthe y foot. This is in addition to providing a desirable round bottom contour of the shoe.

The extension of the-insert 3 below the plane oi' the insole I is suillcient so that the clearance between the insole I. and the outsole I3 about 40 the marginal portion of the opening 2 in the forepart of the insole I is such-as to give additional spring and resilience to the shoe construction.

, The insert 3 is' of rubber, sponge rubber or some suitable resilient .material and this includes a fibrous msterialof such form as to give the properties of resilience.

' '.l'he cover sheet I vcan cover only the forepart l of the insoleV or it may extend back to the heel area and it may include integrally formed there .with an arch support such as a cookie.

The insert 3 is as shown secured to the insole I through the'cover sheet 4 to which it is attached.

Because the insert extends down below the plane Y of the insole and therefore suspends the insole Referring now to Figures 3 and 4, I show the inner sole carrying the flexible rubber insert 2| which has two laps 22 and 23 which extend over the edge 24 of the inner sole. By means of the two rows of stitching 25 and 26 the insert 2| is firmly and permanently secured against buckling or wrinkling to the inner sole 23 through the laps 22 and 23. As above explained, the laps 22 and 23 taper down to a feather edge to fit smoothly over the inner sole. The insert 2| has ventilation perforations 21 which at their lower edge are reinforced against closing by the bosses 29.

It will be noted that the insert 2| is substantially thicker than the insole 20, but in the insert 2| the insert is provided with a tapered edge 23 at the bottom thereof which tapers down at the lap 23 to a feather edge in contact with the insole 23 and thus the spacing or air cell effect shown in Figures 1 and 2 is not obtained in this modiilcation. However, I do obtain a round bottom shoe effect and the properties of increased resilience and breathing.

In this form. of the invention in which a double lap is secured to the insole with the insole'being held between the two laps by means of stitching I obtain a very firm and permanently secured composite insole-insert combination. That is, the insert is rmly held against any loosening or dislocation because of its rm grip both by the engagement of the insole and by `reason of the stitching therethrough.

In Figure 5 I show a modified form of my invention similar in many respects to the formV shown in Figure 1. except-that I do not employ the grooves on .the bottom of the insert shown in that figure. Specifically an insole in which is disposed an insert 3| having perforations 33 extending therethrough is shown. The insert 3| is of substantially greater thickness than insole 30 and extends down below the level of that lnsole. The upper portion of the insert 3| is secured to a cover sheet or layer 34 by adhesion or any other suitable means for afllxing the insert to the cover sheet 34.

The cover sheet is secured at 35 to the upper marginal portion of the insole 30 so as to hold the insert 3| properly in position in the opening in the forepart of the insole in which that insert is disposed. An upper 31 is lasted between the insole 30 and the outsole 38.

It will be noted from an examination of Figur 6 that the cover sheet 34 extends rearwardly and this cover sheet 34 may extend to include the arch and heel area.

As shown particularly in Figure '7, the cover sheet 34 may have integrally formed therewith a cookie 40.

The form of my invention here shown is particularly desirable and economical because I provide increased softness, resilience and foot cominsert 3| is so positioned in the insole 30 so that it projects down below the insole and into contact with the outsole 33. l

By reason of the slight spacing of the insole 33 from the outsole 33 and because of the placement of the resilient insert so as to resiliently space `these two members I obtain a resilience and spring previously unobtainable.

Further, because the insert 3| projects down below the insole under walking conditions pressure is exerted upwardly through the insert 3|, thus causing the perforations therethrough to .open rather than close and also causing the insert to properly form itself to the foot. The advantages of this type of construction from a structurall standpoint are set forth hereinabove.

, The present form of my` invention also provides certain economies in manufacture.

For example I may cut both the cover sheet and the insert from sheet stock, and either before or after joining the cover sheet, perforate through the thickness of both the insert and the cover sheet. This method of dieing out or stamping out inserts from sheet stock-in lieu of the previous method of molding them enables me to form such inserts quicker, cheaper and without the necessity for expensive molds hitherto employed.

The sheetsstock of course may be rubber or it may be any desirable resilient or rubber-like material. I

The cookie for the arch support is integral with the cover sheet and is formed simply by cutting out the cover sheet to proper shape as indicated.y

Various other modiilcations of my invention will suggest themselves to those skilled in the.

art. I accordingly desire that in construing the breadth of the appended claims that they shall not be limited to the specific details shown and escribed in connection with the above explana- I claim:

1. In combination an outsole and an insole, said insole having an opening in the forepart thereof, a resilient insert positioned in said opening, said insert being secured in position in said opening in said insole by means of a cover layer, said insert being positively attached to said cover layer,

y perforations extending through said insert and fort and additionally I obtain a ball cushion supsaid cover. layer, said cover layer extending over and being positively secured to said insole at least at that portion of said insole immediately adjacent said opening in which said insert is disposed by a row of stitching extending through said insole and said cover layer, said row of stitching extending about said opening in said insole, said insert having a thickness substantially greater than said insole, the lower portion of said insert extending below the plane of said insole and resiliently separating said insole from said outsole.

2. In combination, an outsole, an insole, and an upper, said insole having an opening in the forepart thereof, a resilient insert positioned in said opening, said insert being secured in position in said opening in said insole by means of a cover layer which extends over said insole and to which said insert is positively secured. said cover layer being secured to said insole by at least two rows of stitching through said cover layer and said insole, one row of said stitching being located in said insole adjacent to said opening and extending about said opening, said insert having a thickness substantially greater than said insole. said upper being interposed between said insole and said outsole at the 4periphery of said. insole,

the lower portion of said insert extending below the plane of said insole and resiliently separating saidinsole from said outsole.

3. In combination an outsole and an insole, said posed by separate attaching means securing said insole to said cover layer, said attaching means insert having a thickness substantially greater than said insole, the lower portion of said insert extending below the plane of said insole and rev extending about said opening in said insole, said said insole from said outsole.

siliently separating said insole from said outsole;

4. In combination, an ouole, an insole, and an upper, said insole having an opening in the forepart thereof, a resilient insert positioned in said opening, said insert being secured in position in said opening in said insole by means of a cover Y layer which extends over said insole and to which said insert is positively secured, said cover layer being secured to said insole by separate attaching means securing said cover layer to said insole, said attaching means being located at least in saidv insole adjacent to said opening-and extending about said opening, said insert having a thick'- ness substantially greater than said insole, said upper being vinterposed' between. said insole andV said outsole at the periphery of said insole, the

lower portion of said insert extending below ther plane of said insole and resiliently separating MEYER MARGoLnr.

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